Alarm-sounding device



April 14, 1931- E. H. DAGGETT ALARM SOUNDING DEVIGE Original Filed May 31, 1928 3 Sheets-Sheet 1 i` Flaca.

April 14, 1931.

E. H. DAGGETTA ALARM SOUNDING DEVICE Original Filed May` 31, 1928 3 Sheets-Sheet 2 ffl/l gvwentoz W APY 14, 1931- E. H. DAGGETT ALARM SOUNDING DEVICE Original Filed May 3l, 1928 3 Sheets-Sheet 5 wventoz Patented Apr. 14, 1931 l f uNi'rD STATES EDWARD ii. DAGGETT, or GLEN RIDGE, NEW'JEESEY, AssIGNoR` or ONE-HALF T 'ritoiviasl H Dnow'iv, or CHATHAM, `NEW JERSEY PATENT-OFFICE ALARM-SOUNDING' DEVICE Applcationiled May 31, 1928, Serial No. 281,652. Renewed December 19,'1929.

This invention relates to alarmr sounding devices and one 'of its objects is to provider an alarm apparatus which is extremely simpleand inexpensive, but whichis, nevertheless, very eiicient and possessedofinany other advantages over prior art devices for the same general purpose.

The apparatus is intended primarily forL substiution for the A water motor operated 1@ gongs now in general use in connection with automatic sprinkler systems. Suchgong devices comprise a water pipe leading to the motor chamber and to which water under pressure is admitted by an automaticcontrol valve when one or more of the sprinkler heads open. The samewater pipes, althoughppossibly of ditl'erent capacities, can vbe used to operate the apparatus of the present invention instead ofoper'ating a motor gong. 20 In addition to the motor gong, it is customary to have the automatic control valvev ymechanismcontrol one or more switches 0r contacts for an electric alarm 'mechanism comprising gong's distributed around sprin- 2'5 lrlered buildings; This invention conteinplates the idea of using the apparatus also to replace allora part ofsuch an electricj Y mechanism, as the new apparatus is suchA that a number of its alarm sounding unitsmay 3o be widely distributed and Yconnected by air lines to a central air chamber from which air movement is started whenl there is occasion fore, be usedfor signaling or to supplementy an automaticralarm by manual operation of a control valve. i In addition to the othe have been specilically and incideii-tally mentioned,theV new apparatus has nothing lilre'ly to get out of order and does notrequire protection against freezing, as normallyit contains -no water until .the control valve turns advantages whichthe water on and, after the alarm hasserved its purpose, any water remaining in the pipes may be allowed to drain off through the ordinary drain cocks. ,f A

lVith the foregoing and incidentalobjects in view, thevinvention consists in a novel construction andassociation of parts, the features of noveltymbeing "pointed outrin ap?` pended claims, and a preferred embodiment of which is hereinafter described with reference to the drawings,whichaccompanj7 andy form a part of this specification.

Insaid drawings, i Y

Fig. l is a cross section through the air chamber and devices for inducing an air cui'u rent through the chamber.y

Figi)l is a section along the line 2 2 of l Fig. Fig. Fig. 2. ,Y f

Fig. t shows,y mainly cross section, a form of siren which maybe employed.

Fig. shows a device which maybe used 3 isa section along the line 3-93 of in 'connection with the apparatus of Fig. 1

to utilize the air leaving the air chamberto operate analarm sounding device.

Fig. 6 shows in cross section a reed trumpet` which may be connectedsfor` operation io either the air intake or the air outlet from the air'chamber. f

Stated in general terms, ther-apparatus inA the drawingsis designed to operate a sii-ven, horn or trumpet by an air current induced'by a How of water which is turned on either `by I a hand lvalve or by the automatic control valve ofan automatic sprinklersy'stem. In

fact, the apparatus illustrated is capable of y instruments. "Y rIhe ldelivery .pipe

' effecting the operation of a plurality of sound for the water is equipped Vwith a device for transforming the water into substantially. a conical sheet which iman air chamber provided with one or ay plupinges against an oppositely inclined funnel s .lwall mergingat the lower end of the funnel rality of air inlets. l/Vhen the water is running in the conical sheet form mentioned, it tends to exhaust air from the air chamber and this induces a rapid flow of air through'the inlets. Y

Connected to each air inlet is an air hose or tube leading to a sound making instrument, so that as the air is drawn through the inlet it will cause the alarm to be sounded. j In the constructon in the drawings, the air and water flow through the same outlet, but the air may be allowed to escapejfree from the Water and used to operate another trumpet or siren.

Described in detail and with reference to the drawings, the pipe shown at leads to a connection, through'the well-known automatic control valve, to a source of pressure water supply, or, if the apparatus is to be controlled by hand, to a hand valved pressure supply. Adjacent the end of the pipe 10 is a continuation 11 which preferably has an inside diameter smaller than that of the pipe 10. Both the end ofthe pipe 10 and the adjacent end of the continuation 11 are threaded to cooperate with the threads of axially aligned holes in a cap 12 of an air chamber 18. The air chamber 13 is formed in a casing 14, which may be in the form of a casting, having internal threads engaging threads on the periphery of the cap 12. The wall of the casing has one or more openings 15, the number of depending upon the number of alarm devicesto w be operatively connected to the casing.

Threaded into the lower end of the extension 11 of the water delivery pipe is a plug or nozzle device 16 constructed to convert the stream in the pipe into diverging sheets. It has been found that the best results are had by having the device 16'equipped witha central projectionl" and holes or perfor-ations 1S around the central projection; The central projection 17 may be conical and the holes or perforations may be in the form of slots,

' 4but it has been found ythat slightly better results are obtained if the projection 1T rounded as shown and the perforations 1S of a generally ovoid shape arranged relatively and with reference to the central projection 17 in the manner illustrated in Fig. 2.

The air chamber casing 14 has an outlet 21 having internal threads for engaging corresponding threads on an outlet conduit The interior 26 of a conduit adjacent the end v-`:of the pipe 11 is substantially funnel-shaped and merges at 24 into an oppositely expanding portion 25. When water under pressure is admitted lto the pipe 10, the nozzle device ,j `causes the water to assume the form of a sheet 'for each perforation or orifice 18 in the nozzle device 16, the sheetsr collectively forming a substantially continuous sheet striking the'- funnel shaped interior 23 of the outlet at an ,anglerepresented by thedotted lines 26 and L27 in Fig. 1 of the drawings.

When the water is forced through the nozzle 16, the conical sheet of air cooperates with the interior of the conduit 22 to act as an aspirator tending to exhaust air from the chamber 18 andV thereby inducing a strong current of air through the air intake openings.

The air hose or pipe 33 is connected in any suitable way to a'tube35 V(Fig. 4) 'of a siren. The siren may be supported by any suitable hanger or bracket 36 engaging the tubeB. Threaded on the end of the tube is a sheet metal element 37 preferably of substantially the shape shown and having an internally projecting rib 38. Threaded into the sheet metal element 37 is a plug 41 having a peripherally projecting rib or flange 42A supporting a siren horn 43, the horn having a rib 44 engaging one side of flange 42 and a portion 45 spun down to attach the horn to the plug'. j

Inserted in a central opening in the plug 41 is a collar or sleeve 47 holding a tube 48 of the siren mechanism. Frictionally held in position in the tube 48 is an element 51 having a flange engaging the interior of the tube and cut out to form a spider havingla central depression 52 forming a bearing for one endl air will be drawn intov the siren through the Q openings in the spider 55 and the blades of the rotor cutting across the air streams throughthe spider will produce the desired sound.

Instead' of using a siren such as described,V

it may be desired to connect to the air chamber intake a reed trumpet such as illustrated in Fig. 6 of the drawings. This trumpet comprises Va body 61 ofA wood or other suitable material having a removable element 62 carrying a reed disposed in an air channel 63 through the element in the manner usual in reed instruments. Frictionally held in position on the body 61 is a sound amplifylng horn 64. The reed carrying element 62 and the Ahorn 64 are both removable and reversible with respect to the body 61,1 their positions dependingupon whether it is desired to operate the device through a connection to the air inlet 15 or by a connection to the outlet conduit 22 hereinafter described.

In addition to using the suct-ion through the air intake 15 to operate the alarm sounding devices, the Vblast of air leaving-through thel outlet conduit 22'may`alsoI be used for the same purpose. This involves the provision of separate outlets for the air and water so that the'latter will not interfere with sounding the alarms. Any construction giving the separate outlets may be employed, a simple one being the constructionillustrated in- Fig. 5, which is adapte'dto be attached tothe lower end of the outletconduit 22 (Fig. 1). In order to facilitate the attachment the lower end of the conduit 22 has external threads to be engaged'by the threads in a connection 71. A short nipple 7 2' is threaded in the connection and's'upports, in the manner shown, a member 73 having a vertical pasf sage for the water and a side passage, or outlet, 74 for the air, which is preferably given an upward inclination. A short tube 75 threaded in the air outlet and also extending upward carries at its outer end a reduc# ingv nipple 76 which may be threaded exter-V nally or internally to' receive the air' hose connection 31 or a connection which will directly support the trumpet 61. l y

Connected to the member 73 by a short tube 79 is an apparatus which will cause the water to form an air seal, but which can be regulated 'to allow the water to' escapethrough an outlet 80 rapidly' enough to pre f vent it from backing up to the' air passage'V 74. The outlet 8O leads from a shell 81 attached to the tube 79 and having its lower.

end closed by a threadedplug 82. Threaded in the plug 89. member 83 having al conr` i ical head 84 lcooperating with thechain'- fered lower `end of the tube 79. In installing the apparatus the inember'83 is adjusted so that the space between thev conical head land the lower interior of the tube will retardr theA outward flow of waterjust enough to pre-- vent air from escaping,after which the adjustment may be maintained yby. setting-the lock nut 85.

In case it' is desired to use the airblown '1; through the air outlet 7 6 to operate a siren,

the previously described apparatus, shown in Fig. 4', may be employed by removing the supporting tube 48, for the siren rotor and turning it end forr end; The form of bearing shown will also require supporting the siren with thehorn directed downward so that the end ofthe rotor shaft 53 will beproperly supported in the seat 52, although obviously a bearing .construction might be used which will prevent endwise movement of the shaft no matter which end` is down. If the siren mechanism is reversed as stated, the air hose 33 may be connected to the air nozzle 7 6 (Fig. 5) and turning on` the water through the pipe 10 will cause the air driven by the water to actuate the siren.

The trumpet apparatus is shownv in Fig. 6 with the parts assembled in proper relation for operation by the air suction through the air intakeY 15. For connecting purposes an air'hose or pipe like"33,-with suitable ft-v` tings or connectors, may be used when the alarm is to be' placed at some distance -from the air current producing mechanism.

In. the event that it is desired to operate the trumpet appar'atusby pressure, that is, by connecting'it to the air outlet7 5 (Fig. 5), the horn 64a may be removed and replaced so' as to surround the "end 77 of the trumpet,

although tl'iisreversal is not essential to satis- 7; l

factory operation. After this change is made, the end 91 of; thetruinpet maybe screwed on the end of the outletp-ipe75, the

ln' describing the construction it' Vhas been necessary incidentally to describe the opera'- tion of the apparatus to such an extent that it is thought the usual summary may beA omitted. l

While the" construction shown and described is admirably adapted' to fulfillV the purposes stated, it isy obvious'tl'iat' the ideas .i

arecapable of other embodiments,fwit'h-suitable modiications and changes,- all coming*r `within the scope of the claims which follow.

TYWhat is' claimed isi-- 1. An alarm apparatus comprising awater pipey through wh-ichwater is` delivered under pressure when an alarm is to be sounded,van air operated device" for sounding the alarm,

and'i means cooperating with the pipeand said device whereby the ywater leaving the -vf delivery end of'the'pipe Will cause an' operdevice.

'atingfl'ow of air through thefalarm sounding 2. An alarmapparatus comprising a waterk pipe through which water'is deliverediunder pressurewhen an alarm'is tobe sounded, a plurality of air operated devices for sounding the alarm,and meanscooperatingwith the pipe and said 'devices' wherebyV the water leaving'the delivery endof the pipe willcause' an operating flow of air through the alarm sounding devices.l

3. An alarm apparatus comprising alwat'er' pipe through which wateris deliveredtoop# Veratey the alarm, a casing surroundingthe delivery end of? thel pipe comprising' anv air' inlet and an outlet, means adjacent' the' delivery end of the pipe whereby thewater leaving thepipe-will induce'an aircurrent through the casing', and'` a'nf alarlin f connected for operation by the air current".

4. An*apparatus-comprising a water' pipe h-"Oll'gh WhichU water is delivered when thealarm is put'l in operation, a'` casings'urrounding the' deliveryend of the pipe confipri'sing! CFI an air inlet and ap outlet, means at the delivery end vof the pipe whereby the Water leaving the end of the pipe will induce an air current through the casing, and an air operated alarm connected to the easing for operation by said induced current.

5. In an apparatus of the character described, a pipe eommunicatingwvith a sprinkler system and through which Water is forced When the sprinkler system is itunetioning, a casing surrounding the delivery end of the pipe and'provided With an air intake and an outlet, means adjacent the de livery end of the pipewhereby Water leaving the pipe will induce an air current through the intake and outlet, and an alarm connected for-operation by the air current.

6. In an apparatus of the character de scribed, a pipe communicating with a sprinkler system and through Which Water is forced when the sprinkler system is functioning, a casing surrounding the delivery end of the pipe and provid-ed With an Yair intake and an outlet, means adjacent the delivery end of the pipe whereby Water leaving the pipe Will induce an air current through the intake and outlet, and alarm devices connected for operation by the air current.

7 Analarm apparatus comprising a Water pipe through which `Water is delivered under pressure when an alarm is to be sounded andv terminating in a sheet forming nozzle, an air operable device orsounding an alarm, and means cooperating with the nozzle comprising a connection to the alarm device for causing .an operating tloW of air through the alarm device.

8.v An alarm apparatus comprising a Water Y pipe through which Water is delivered under pressure When an alarm is to be sounded, a device at the delivery end of the pipe for forming the Water into one or more sheets on a diverging line or lines, an aspirator 0perated by the Water, an air chamber in com-- :nunication with the aspirator and having an air intake, and an air operable alarm sound'- ing device connected to said. intake.

S). An alarm apparatus comprising a Water pipe through which Wateris delivered under pressure when an alarm is to be sounded, an air chamber surrounding the delivery end ot the pipe and provided with an air intake and an outlet for air and Water, a device in the delivery end of the pipe for spreadingthe Water from the pipe into one or more sheets, and an outgoing conduit adjacent said device having lits Wall irst converging and then divcrging, said device andconduit cooperating to cause an air current through the air chamber, and an` alarm connected for operation by the air current.

l0. An alarm apparatus comprising a Water pipe through which Water is delivered under pressure when an alarm is to be sounded and terminating in a sheet forming nozzle,

alarm sounding device connected for oper-V ation to the air intake.v ,Y p

ll. An alarm `device comprising a Water pipe through vwhich Water-is delivered under pressure when an alarm is to be sounded, a de-` vice in the delivery end of the pipe having a central projection into the Water current and a plurality of perforations around said. projection whereby to give a conical sheet formation to the Water leaving the pipe, an air chamber above and in communication with said device, meansvvhereby thejsheeted Water will tend to exhaust air from said chamber, an air inlet into said chamber, and an air operable alarm connected for operation by the air flowing to said inlet.

l2. Ainv alarm device comprising awater pipe through which Water is delivered under pressure when an alarm is to be sounded, a device in the delivery end of the pipe having a plurality of orifices and a. central unpertorated portion cooperating to form the Water into a substantially continuous conical sheet, a casing surrounding the deliveryv end of the pipe having an air intake, an outlet having a Wall-,formed as an aspirator to receive the conical' sheet of Water and et' sutlicient capacity to accommodate the combined flow of Water and air.

18. An alarmdevice comprising a Water pipe through which Water is delivered under pressure when an alarm is to be sounded, a device in the delivery'end of the pipe, having an unperforated center and a plurality of perforations around said center, to give the Water leaving the device a sheet 'forinatiom an outlet conduit having a Wall adjacent to and converging away from said device, said Wall mergingl With a Wall divergingl from the point oi' merger, said outlet at'its nari-cwest signature.

EDWARD H. DAG GETT. 

